|
|
The influence of internal thermal storage mass used in passive houses' construction systems on their summer thermal stability
Němeček, Martin ; Hraška,, Jozef (referee) ; Katunský,, Dušan (referee) ; Kalousek, Miloš (advisor)
In recent years we may observe a growth in construction of passive houses and low energy houses using lightweight constructions such as modern wooden houses. It is assumed that wooden houses keep overheating more comparing to brick houses during summer period. Due to the lack of research in this field the paper investigates the influence of internal thermal storage mass in passive houses constructions on their summer thermal stability under the Czech climatic conditions. Only sensible heat accumulation without a usage of phase change materials is examined. Differences between wooden houses comparing to brick-built houses are emphasized. Objects of research are mostly residential passive houses in low energy building standards. However, the results of research might be applied to different types of buildings as well. The first section outlines theoretical fundamentals. For the research itself various scientific research methods were used, such as basic mathematical calculations, experimental temperature measurement of two buildings (detached house in Dubňany and in Moravany) and numerical simulations. Own tribute to the research was first of all discussion on the topic of thermal accumulation and structures heat capacity calculation. Experimental measurements outlined conclusive evidence about the importance of internal thermal storage mass in respect of interior summer overheating. The research confirmed that the highest interior temperature reached is mostly influenced by solar gains through unshaded windows. However, the influence of internal thermal storage mass is not remote. If we compare standard timber-framed wooden house to the hole ceramic bricks-built house, the wooden house will overheat by 0,5°C more during a standard day. Wider spread in the maximum temperature reached was measured for lightweight consturctions wooden houses without any internal thermal storage mass. Therefore, such structures should have an additional layer of thermal storage mass.
|
|
|
The indoor environment of Kindergartens in terms of Building physics requirements
Jechová, Marie ; Krupica, Roman (referee) ; Bantová, Sylva (advisor)
The thesis titled "The indoor Environment of Kindergartens in Terms of Building Physics Requirements" addresses the challenges associated with ensuring thermal comfort in the indoor environment, while simultaneously providing adequate lighting and daylighting for the classrooms of kindergartens. The thesis is structured into interconnected and complementary sections. The first section dissects the identified problem, establishes legislative requirements, outlines research methods, and defines the objectives, which will be assessed in the conclusion. This section also includes the definition of the kindergarten object in accordance with current legislation. Furthermore, the issues of lighting and daylighting are explained from the perspective of applicable laws, regulations, and standards, incorporating all necessary variables, graphs, formulas, calculations, and definitions. Similarly, subsequent chapters will elaborate on the thermal comfort of the indoor environment. The final section of the theory provides an overview of simulation and computational software tools, employed to model different scenarios, compare the current and proposed conditions, and draw conclusions for the thesis. The practical section follows, focusing on the design of window openings, shading methods, and ventilation regimes to meet the requirements for daily lighting and daylighting while adhering to the maximum indoor air temperature in line with normative requirements. Experimental measurements of essential input data for assessing the thermal stability of the indoor environment were conducted during summer months in the existing facility. In the concluding part of the thesis, conclusions will be drawn regarding the ratio of floor area of transparent parts of building envelopes to the floor area of the classrooms. This is done to ensure compliance with legislative requirements concerning both thermal and lighting comfort in the indoor environment. The conclusion also summarizes potential measures to achieve the desired parameters and outlines a prospective solution to the addressed issues.
|
|
|
The influence of internal thermal storage mass used in passive houses' construction systems on their summer thermal stability
Němeček, Martin ; Hraška,, Jozef (referee) ; Katunský,, Dušan (referee) ; Kalousek, Miloš (advisor)
In recent years we may observe a growth in construction of passive houses and low energy houses using lightweight constructions such as modern wooden houses. It is assumed that wooden houses keep overheating more comparing to brick houses during summer period. Due to the lack of research in this field the paper investigates the influence of internal thermal storage mass in passive houses constructions on their summer thermal stability under the Czech climatic conditions. Only sensible heat accumulation without a usage of phase change materials is examined. Differences between wooden houses comparing to brick-built houses are emphasized. Objects of research are mostly residential passive houses in low energy building standards. However, the results of research might be applied to different types of buildings as well. The first section outlines theoretical fundamentals. For the research itself various scientific research methods were used, such as basic mathematical calculations, experimental temperature measurement of two buildings (detached house in Dubňany and in Moravany) and numerical simulations. Own tribute to the research was first of all discussion on the topic of thermal accumulation and structures heat capacity calculation. Experimental measurements outlined conclusive evidence about the importance of internal thermal storage mass in respect of interior summer overheating. The research confirmed that the highest interior temperature reached is mostly influenced by solar gains through unshaded windows. However, the influence of internal thermal storage mass is not remote. If we compare standard timber-framed wooden house to the hole ceramic bricks-built house, the wooden house will overheat by 0,5°C more during a standard day. Wider spread in the maximum temperature reached was measured for lightweight consturctions wooden houses without any internal thermal storage mass. Therefore, such structures should have an additional layer of thermal storage mass.
|
guest ::
